Gymnocephalus cernua
Gymnocephalus cernua
(Ruffe)
Fishes
Exotic
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152 results for Gymnocephalus cernua (Ruffe)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1605666 WIAshland[No locality description provided]2015 04010301 Beartrap-Nemadjiestablished
792974 WIAshland[No specific locality provided]2012 04010301 Beartrap-Nemadjiestablished
1401513 WIAshlandChequamegon Bay2010 04010301 Beartrap-Nemadjiestablished
1401583 WIAshlandChequamegon Bay2013 04010301 Beartrap-Nemadjiestablished
1401545 WIAshlandChequamegon Bay2014 04010301 Beartrap-Nemadjiestablished
1401307 WIAshlandChequamegon Bay2015 04010301 Beartrap-Nemadjiestablished
1401342 WIAshlandChequamegon Bay2015 04010301 Beartrap-Nemadjiestablished
46210 WIAshlandKakagon River, (Lake Superior) about 7 miles northeast of Ashland, WI1995 04010301 Beartrap-Nemadjiestablished
1906402 WIAshlandLake Superior, at Chequamegon Bay, WI2010 04010301 Beartrap-Nemadji 
1906837 WIAshlandLake Superior, at Chequamegon Bay, WI2013 04010301 Beartrap-Nemadji 
1906968 WIAshlandLake Superior, at Chequamegon Bay, WI2014 04010301 Beartrap-Nemadji 
1907059 WIAshlandLake Superior, at Chequamegon Bay, WI2014 04010301 Beartrap-Nemadji 
1907161 WIAshlandLake Superior, at Chequamegon Bay, WI2015 04010301 Beartrap-Nemadji 
1907166 WIAshlandLake Superior, at Chequamegon Bay, WI2015 04010301 Beartrap-Nemadji 
1907186 WIAshlandLake Superior, at Chequamegon Bay, WI2015 04010301 Beartrap-Nemadji 
1907187 WIAshlandLake Superior, at Chequamegon Bay, WI2015 04010301 Beartrap-Nemadji 
1247598 WIAshlandLake Superior, Chequamegon Bay2015 04010301 Beartrap-Nemadjiestablished
1247605 WIAshlandLake Superior, Chequamegon Bay2015 04010301 Beartrap-Nemadjiestablished
1247606 WIAshlandLake Superior, Chequamegon Bay2015 04010301 Beartrap-Nemadjiestablished
1247607 WIAshlandLake Superior, Chequamegon Bay2015 04010301 Beartrap-Nemadjiestablished
1247608 WIAshlandLake Superior, Chequamegon Bay2015 04010301 Beartrap-Nemadjiestablished
1401431 WIBayfieldFlag River2012 04010301 Beartrap-Nemadjiestablished
1401444 WIBayfieldFlag River2012 04010301 Beartrap-Nemadjiestablished
1401455 WIBayfieldFlag River2012 04010301 Beartrap-Nemadjiestablished
1401501 WIBayfieldFlag River2012 04010301 Beartrap-Nemadjiestablished
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Data Disclaimer: Number of records does not imply species abundance. This summary represent collection records only and may not reflect the actual distribution of established populations. These data are preliminary or provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the data.

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The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [4/9/2026].

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For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.